mirror of
https://github.com/golang/go
synced 2024-11-22 16:44:54 -07:00
3ff6ff7f84
When creating the temporary for map functions, if the key contains pointer, we need to create pointer-typed temporary. So if the temporary is live across a function call, the pointer is live. Change-Id: Id6e14ec9def8bc7987f0f8ce8423caf1e3754fcb Reviewed-on: https://go-review.googlesource.com/c/go/+/311379 Trust: Cherry Zhang <cherryyz@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
35 lines
557 B
Go
35 lines
557 B
Go
// run
|
|
|
|
// Copyright 2021 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package main
|
|
|
|
import "runtime"
|
|
|
|
type T [10]int
|
|
|
|
var m map[*T]int
|
|
|
|
//go:noinline
|
|
func F() {
|
|
m = map[*T]int{
|
|
K(): V(), // the key temp should be live across call to V
|
|
}
|
|
}
|
|
|
|
//go:noinline
|
|
func V() int { runtime.GC(); runtime.GC(); runtime.GC(); return 123 }
|
|
|
|
//go:noinline
|
|
func K() *T {
|
|
p := new(T)
|
|
runtime.SetFinalizer(p, func(*T) { println("FAIL") })
|
|
return p
|
|
}
|
|
|
|
func main() {
|
|
F()
|
|
}
|